Steve, a 32 year-old man suffers from liver damage. Clinical examination reveals that it was caused by a toxins produced by a certain type of mold. Steve always consumes home-cooked food, and it has been over eight years since he ate from a restaurant. Steve's staple diet includes rice and vegetables from his farm. In this scenario, Steve is infected by ______.
A. Clostridium.
B. Aspergillums.
C. Staphylococcus.
D. Salmonella.